1. Ph.D. Candidate, School of Management Science and Real Estate, Chongqing Univ., Chongqing, China (corresponding author).
2. School of Management Science and Real Estate, Chongqing Univ., Chongqing, China.
3. College of Computer Science, Sichuan Univ., Chengdu, China.
4. Professor, School of Management Science and Real Estate, Chongqing Univ., Chongqing, China.